The present invention provides a method for preventing or treating hair loss or promoting hair growth, comprising secoiridoid glucoside derivatives or hydrolysate thereof as active ingredients. The present invention not only includes natural compounds as an active ingredient without side effects of the long-term treatment in a chronic disease hair loss, but also shows excellent effects for promoting hair growth with stable efficacy. Therefore, the present invention may be used as an effective pharmaceutical, cosmetic or functional food composition for preventing or treating hair loss or promoting hair growth.